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Subject: [Bug target/103861] [i386] vectorize v2qi vectors
Date: Wed, 12 Jan 2022 19:03:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103861

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Uros Bizjak <uros@gcc.gnu.org>:

https://gcc.gnu.org/g:b5193e352981fab8441c600b0a50efe1f30c1d30

commit r12-6533-gb5193e352981fab8441c600b0a50efe1f30c1d30
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Wed Jan 12 19:59:57 2022 +0100

    i386: Add CC clobber and splits for 32-bit vector mode logic insns
[PR100673, PR103861]

    Add CC clobber to 32-bit vector mode logic insns to allow variants with
    general-purpose registers.  Also improve ix86_sse_movcc to emit insn wi=
th
    CC clobber for narrow vector modes in order to re-enable conditional mo=
ves
    for 16-bit and 32-bit narrow vector modes with -msse2.

    2022-01-12  Uro=C3=85=C2=A1 Bizjak  <ubizjak@gmail.com>

    gcc/ChangeLog:

            PR target/100637
            PR target/103861
            * config/i386/i386-expand.c (ix86_emit_vec_binop): New static
function.
            (ix86_expand_sse_movcc): Use ix86_emit_vec_binop instead of
gen_rtx_X
            when constructing vector logic RTXes.
            (expand_vec_perm_pshufb2): Ditto.
            * config/i386/mmx.md (negv2qi): Disparage GPR alternative a bit.
            (<plusminus:insn>v2qi3): Ditto.
            (vcond<mode><mode>): Re-enable for TARGET_SSE2.
            (vcondu<mode><mode>): Ditto.
            (vcond_mask_<mode><mode>): Ditto.
            (one_cmpl<VI_32:mode>2): Remove expander.
            (one_cmpl<VI_16_32:mode>2): Rename from one_cmplv2qi.
            Use VI_16_32 mode iterator.
            (one_cmpl<VI_16_32:mode>2 splitters): Use VI_16_32 mode iterato=
r.
            Use lowpart_subreg instead of gen_lowpart to create subreg.
            (*andnot<VI_16_32:mode>3): Merge from "*andnot<VI_32:mode>" and
            "*andnotv2qi3" insn patterns using VI_16_32 mode iterator.
            Disparage GPR alternative a bit.  Add CC clobber.
            (*andnot<VI_16_32:mode>3 splitters): Use VI_16_32 mode iterator.
            Use lowpart_subreg instead of gen_lowpart to create subreg.
            (*<any_logic:code><VI_16_32:mode>3): Merge from
            "*<any_logic:code><VI_32:mode>" and "*<any_logic:code>v2qi3" in=
sn
patterns
            using VI_16_32 mode iterator.  Disparage GPR alternative a bit.
            Add CC clobber.
            (*<any_logic:code><VI_16_32:mode>3 splitters):Use VI_16_32 mode
            iterator.  Use lowpart_subreg instead of gen_lowpart to create
subreg.

    gcc/testsuite/ChangeLog:

            PR target/100637
            PR target/103861
            * g++.target/i386/pr100637-1b.C (dg-options):
            Use -msse2 instead of -msse4.1.
            * g++.target/i386/pr100637-1w.C (dg-options): Ditto.
            * g++.target/i386/pr103861-1.C (dg-options): Ditto.
            * gcc.target/i386/pr100637-4b.c (dg-options): Ditto.
            * gcc.target/i386/pr103861-4.c (dg-options): Ditto.
            * gcc.target/i386/pr100637-1b.c: Remove scan-assembler
            directives for logic instructions.
            * gcc.target/i386/pr100637-1w.c: Ditto.
            * gcc.target/i386/warn-vect-op-2.c:
            Update dg-warning for vector logic operation.=